/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.crazymaker.servlet.container.netty.resource;

import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URL;
import java.security.cert.Certificate;
import java.util.jar.Manifest;


public class EmptyResource implements WebResource
{

    private final WebResourceRoot root;
    private final String webAppPath;
    private final File file;

    public EmptyResource(WebResourceRoot root, String webAppPath)
    {
        this(root, webAppPath, null);
    }

    public EmptyResource(WebResourceRoot root, String webAppPath, File file)
    {
        this.root = root;
        this.webAppPath = webAppPath;
        this.file = file;
    }

    @Override
    public long getLastModified()
    {
        return 0;
    }

    @Override
    public String getLastModifiedHttp()
    {
        return null;
    }

    @Override
    public boolean exists()
    {
        return false;
    }

    @Override
    public boolean isVirtual()
    {
        return false;
    }

    @Override
    public boolean isDirectory()
    {
        return false;
    }

    @Override
    public boolean isFile()
    {
        return false;
    }

    @Override
    public boolean delete()
    {
        return false;
    }

    @Override
    public String getName()
    {
        int index = webAppPath.lastIndexOf('/');
        if (index == -1)
        {
            return webAppPath;
        } else
        {
            return webAppPath.substring(index + 1);
        }
    }

    @Override
    public long getContentLength()
    {
        return -1;
    }

    @Override
    public String getCanonicalPath()
    {
        if (file == null)
        {
            return null;
        } else
        {
            try
            {
                return file.getCanonicalPath();
            } catch (IOException e)
            {
                return null;
            }
        }
    }

    @Override
    public boolean canRead()
    {
        return false;
    }

    @Override
    public String getWebappPath()
    {
        return webAppPath;
    }

    @Override
    public String getETag()
    {
        return null;
    }

    @Override
    public void setMimeType(String mimeType)
    {
        // NOOP
    }

    @Override
    public String getMimeType()
    {
        return null;
    }

    @Override
    public InputStream getInputStream()
    {
        return null;
    }

    @Override
    public byte[] getContent()
    {
        return null;
    }

    @Override
    public long getCreation()
    {
        return 0;
    }

    @Override
    public URL getURL()
    {
        return null;
    }

    @Override
    public URL getCodeBase()
    {
        return null;
    }

    @Override
    public Certificate[] getCertificates()
    {
        return null;
    }

    @Override
    public Manifest getManifest()
    {
        return null;
    }

    @Override
    public WebResourceRoot getWebResourceRoot()
    {
        return root;
    }
}
